Locking safety pin and key carrier
OwnerRobert W. Wagnerinventor
Life of this patent
Estimating the term…
Abstract
An improved self-locking safety pin unit or device has been devised in which a thumb and finger rotatable sleeve is adapted, when turned in one direction, to raise and then turn or swing, an upper, loop-like, latching or nose part under resilient spring pressure out of engagement with a pointed end of a pin part and then into a sidewise offset, clearing or open relation with respect thereto when a lower, pin-supporting, loop-like, base part is gripped to retain it in a stationary position. The lower base or loop part is shaped to receive keys or other eyelet-like elements thereon that, when the pin part is in an open position, may be introduced thereon by first swinging a pivoted pin closure to an open position which then is moved to a closing-off position for key retention on the lower loop part.
Claims15
In a self-locking safety pin device, having a pair of cooperating upper and lower hollow loop parts, having a pointed pin part secured at its back end to project from a front end of the lower loop part and with its pointed end positioned in a cooperative relation with a front end of said upper loop part, and having a sleeve part rotatably positioned in an operating relation over back end portions of said pair of loop parts, the improvement which comprises, a back end portion of said upper loop part having a hole extending tranversely therethrough, a camming element operatively positioned within the back end portion of said upper loop part and having a cam end portion adapted to project outwardly through said hole, said sleeve part having a closed-end spiral-shaped guide slot portion in its wall into which said cam end portion of said element is adapted to extend for guided movement therealong to raise said upper loop part with respect to said lower loop part to a clearing position with respect to the pointed end of said pin part when said sleeve part is manually forwardly rotated with respect to said upper loop part to advance said cam end portion from a lower position to an upper position along said slot portion and to then swing said upper loop part to a sidewise-open position with respect to the pointed end of said pin part when the manual forward rotation of said sleeve part is continued, and a spring operatively positioned within the back end portion of said lower loop part and connected to said sleeve part to flexibly resist manual forward rotation of said sleeve part.
In a locking safety pin, having a pair of upper and lower cooperating hollow loop parts, having a pointed pin projecting from a front end of said lower loop part for latching engagement within a front end of said upper loop part, and having an operating sleeve rotatably carried on back end portions of said pair of loop parts for moving said upper loop part into and out of a latching position with respect to the pointed end of said pin part, the improvement which comprises, a swingable pin-like closure element having a leg portion pivotally mounted within said lower loop part adjacent one end of its body and adapted to extend across to an opposed portion of its body for swinging movement into and out of a closing-off position across the body, whereby a key-like element may be introduced from a front end portion of said lower loop part into the body thereof for retention thereon.
Dependencies are inferred from the claim text.